Sectional wall or ceiling.



N0. 739,646. PATENTED SEPTQZZ; 1903. J. A. CARTER. SECTIONAL WALL OBCEILING.

APPLIGA'IION FILED MAY 3. 1903.

no MODEL.

' UNITED STATES Patented September 22,1903.

PATENT OFFICE.

- JOHN A. CARTER, or SUMMIT, NEW JERSEY.

SEC'TiO NAL WALL OR CEILING.

EPECIFICATION forming part of Letters Patent No. 739,646, datedSeptember 22, 1903.

Application filed May 8,1903. Serial No. 156,208. on an.) 7

To all whom it may concern: r

Be it known that I, JOHN ALEXANDER CAR- TER, a citizen of the Dominionof Canada,and a a resident of Summit, in the county of Union and Stateof New Jersey, have made a certain new and useful Invention in SectionalWalls or Ceilings; and I declare the following to be a full, clear, andexact description of the same, such as will enable others skilled in theart to which it appertains to make and use the invention, referencebeing had to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification. v

Figure 1 is a perspective View illustrating the application of theinvention to one form of ceiling having wooden joists. Fig. 2 is a sideview illustrating the application of the invention toa fireproofceiling. Fig. 3 is a perspective view of one of my plaster sections.Figs.

Land 5 are detail cross-sections on the lines 44' and 5 5, Fig. 3. Fig.6 is a detail perspective view of metal hanger C. Fig. 7 is a sectionaldetail view to illustrate how hanger G is secured in position in theplaster section.

This invention has relation to sectional walls and ceilings, and has forits object the provision of finished plaster sections whichcan bequickly and securely applied or put together in place in an exactly evenmanner by unskilled workmen'in'such way that they will mutually hold orbrace each other against warping or displacement.

With this objectjn view the invention consists in the novel constructionand combinations of parts, all as hereinafter described, and pointed outin the appended claims.

Referring to the accompanying drawings, the letter A designates one ofmy plaster sections, usually of oblong rectangular form and having abody or framework of burlap B, upon both sides of which is built theplaster, rough finished upon the inside of the section and polished in afinished manner upon the one side thereof, this being accomplished bycasting upon a polished surface, such as glass. This plaster section israbbeted at a upon the inside thereof upon two sides of its perimeterand rabbeted at a upon the outside upon the other two sides of itsperimeter, lockin g metal tongues or projections i) being let into theplaster while it is in a soft state at the edges ;or margins upon.'theinside of. the sections and extending over and beyond the rabbet of allfour sides. The tongues or projections 19 are of double-angle or Zfornnwith long bases, which lie upon the burlap body and are suitablycovered in with the plaster, the long bases of opposite tongues beingconnected or integral transversely of the section. 7

In use the rabbet upon the inside edges of one section will overlap orengage the rabbet "of the outside edges of the adjoining section, andvice versa, the bracing metal tongues b in each case spanning the jointof said edges and extending over and beyond the rabbet, whereby therecan be no lifting or depression of one section with reference to itsneighbor, the mutallyabutting edges at the same time preventing anylateral or edgewise displacement of the sections. The tongues I) restupon the rear or inner marginal surface of the plaster section andproject beyond its rabbeted edges.

In securing the sections in place upon the ceiling incases where woodenjoists are in use the perforated metal hangers C, Fig, 1, are letintothesoft plaster, such hangers having T-form heads 0, lying upon the burlapframework, and having a reinforcing-strip of burlap c. placed thereoverand suitably covered in with plaster. These T-form hangers arepreferably formed or a single piece of sheet metal doubled transverselyand having one end split or opened at the doubling-line, the twoseparated halves at this endbeing bent-in opposite directions at rightangles to the main portion of the piece. Nails are driven through theperforations of the hangers into the joists.

In securing the sections in place upon fireproof ceilings hangers D,Fig. 2, are employed of the same general shape as tongues 1), except atone end or short side of the section, where the hangerrbases arereversely beut, as at d, these hangers having, however, their headportions projecting beyond the plaster to leave a space or intervaltherebetween in which is received the furring of the ceiling by lateralor edgewise movement of the section being handled.

Having thus described my invention, what I claim as new, and desire tosecure byLetters Patent, is-- 1. A plaster section for sectional walls,hav-' ing rabbeted edges and edge-locking tongues resting upon the rearor inner marginal surface of said section, and projecting beyond saidedges, substantially as specified.

2. A sectional wall-facing consisting of interfitting plaster sections,each of which has rabbeted edges, and edge-locking tongues spanning thejoints of said edges, substantially as specified.

, 3. Aplaster cast section for sectional Walls, having an inside fiberlayer and outside plaster layers, one of which has a finished surface,substantially as specified.

4. Aplaster section for sectional walls, having an inside fiber layerand outside plaster seems to said fiber layer, substantially asspecified.

In testimony whereof I afiix my signature in presence of two witnesses.

J. A. CARTER.

Witnesses:

HERBERT G. EMERY, JENNIE M..WRIGHT.

